%0 Journal Article
%T T-odd asymmetries in radiative top-quark decays
%A Hagiwara
%A Kaoru
%A Mawatari
%A Kentarou
%A Yokoya
%A Hiroshi
%J High Energy Physics - Phenomenology
%D 2007
%I 
%R 10.1088/1126-6708/2007/12/041
%X We study the angular distribution of the charged lepton in the top-quark decay into a bottom quark and a W boson which subsequently decays into \ell\nu_{\ell}, when a hard gluon is radiated off. The absorptive part of the t \to bWg decay amplitudes, which gives rise to T-odd asymmetries in the distribution, is calculated at the one-loop level in perturbative QCD. The asymmetries at a few percent level are predicted, which may be observable at future colliders.
%U http://arxiv.org/abs/0707.3194